5306-01-311-3446

Find complete technical information, availability, and procurement data for: 5306-01-311-3446
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-311-3446

Item Name Code

27851

Assigment Date

11/23/1989 (36 years ago)

3a thread class, 1.640 inches minimum and 1.687 inches maximum fastener length, 0.468 inches nominal thread length, right-hand thread direction, hexagon head style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.468 inches nominal
Fastener Length: 1.640 inches minimum and 1.687 inches maximum
Head Style: hexagon
Head Height: 0.140 inches minimum and 0.172 inches maximum
Width Between Flats: 0.428 inches minimum and 0.440 inches maximum
Grip Diameter: 0.2487 inches minimum and 0.2492 inches maximum
Shank Unthreaded Hole Diameter: 0.076 inches minimum and 0.086 inches maximum first hole
Nominal Thread Diameter: 0.250 inches
Grip Length: 1.172 inches minimum and 1.204 inches maximum
Thread Quantity Per Inch: 28
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Criticality Code Justification: feat
Distance From Head Largest Bearing Surface To Shank Hole Center: 1.484 inches minimum and 1.516 inches maximum first hole
Surface Finish: 63.0 microinches bearing surface of head
Surface Finish: 63.0 microinches grip
Special Features: safety critical item. apply one coat of mil-p-23377, ty 1, cl 1 or 3 and two top coats of mil-c-46168, color code 33538 per fed-std-595 to top of head
Material: steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 overall
Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or mil-s-6050 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6758 mil spec 5th material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec all treatment responses overall
Thread Series Designator: unf

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
02555	Close Tolerance Bolt
8936426-01	Close Tolerance Bolt

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5306-01-311-3446?

The FSCG of the NSN 5306-01-311-3446 is 5306

Does the NSN 5306-01-311-3446 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-311-3446 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5306-01-311-3446 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-311-3446 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5306-01-311-3446 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Thu, Nov 23, 1989